Radar Chart: Relate Different Factors

There is nothing defensive about a Radar Chart. This chart type is called Radar simply because it resembles radar on screen. Radar chart is useful when you want to look at several different factors, all related to one item. For example, you can use a Java based Radar chart component from ElegantJ Charts Library to compile data about a wide receiver on a professional football team.

Radar charts can be used for:

• Mathematical applications
• Statistical applications

Components and functions of Radar Charts:

• A Radar chart is the presentation of group data at the perimeter of radar.
• This chart type has multiple axis to plot the data.
• A point close to the center on any axis indicates a low value while a point near the edge is a high value.
• The incrementing numeric values are placed from the center of the radar to the perimeter for a user to determine how specific group data relates to the whole of the group data.
• Radar charts components are similar to Line charts. However, the radial grid to display data items sets it apart.
• In a radial grid, the scale value grid lines circle around a center point representing zero.
• The grid is not entirely circular; rather it is an equilateral polygon, with each category being plotted at a point of the polygon. Thus, if there are three categories, the grid is triangular. If there are eight categories, it will be octagonal.
• There must be at least three categories for a Radar chart to make sense.
• The area inside of the radial grid for each series will be coloured translucently to give an idea of the total size of a data series and still note the overlapped data.
• While interpreting a Java Radar chart, check each axis as well as the overall shape to see how well it fits your goals.

For the Radar chart, the following statistics can be calculated:

• Sum: The sum value in the series.
• Count: The count value in the series.
• Valid Count: The valid count value in the series.
• Average: The average value in the series.
• Valid Average: The valid average value in the series.
• Maximum: The maximum value in the series.
• Minimum: The minimum value in the series.

Radar chart is having sub type as under:

• Radar
• Stacked Radar